Freeman Bibliographical Database
| Identifier: | F1900.21 |
| Date: | 2014 |
| Concise reference: | Burkhardt, F., J. A. Secord et al eds. 2014. The correspondence of Charles Darwin. Cambridge: Cambridge University Press. vol. 21: 1873. |
| Identifier: | F1900.21 |
| Date: | 2014 |
| Concise reference: | Burkhardt, F., J. A. Secord et al eds. 2014. The correspondence of Charles Darwin. Cambridge: Cambridge University Press. vol. 21: 1873. |